@misc{indiciae2dcd0d43ca8f,
  title = {A guide to the aging and sexing of wood warblers (Parulidae) in fall},
  author = {C.S. Robbins},
  year = {1964},
  url = {https://pubs.usgs.gov/publication/5220234},
  note = {Source identifier: 5220234}
}